The theater star who’s nominated for best song for animated film “Moana” — is producing a movie version of his previous Broadway show, “In the Heights,” and also starring in Rob Marshall’s upcoming movie, “Mary Poppins Returns.”

He was spotted at WME’s pre-awards bash on Friday night after Oscar rehearsals where he reportedly sang a tune from “La La Land” and also did a “Saturday Night Fever” pose on stage.

We hear that on Saturday night, he’s expected to introduce a tune from “In The Heights” at a Weinstein Company party at the Montage hotel to be performed by Cynthia Erivo, Chris Jackson and Corbin Bleu.

Nicole Scherzinger is also expected to perform at the Harvey Weinstein party for guests including “Lion” stars Nicole Kidman, Dev Patel and Sunny Pawar. The film’s nominated for six Oscars, including best film.